8
WM-GX221
SECTION 4
MECHANICAL ADJUSTMENT
SECTION 5
ELECTRICAL ADJUSTMENT
PRECAUTION
1.
Specified voltage: 2.5 V (DC)
2.
Switch and control position
VOL
: MAX
SPEAKER
: OFF
AVLS
: NORM
SOUND BOOST : OFF
PB EQ
: NORM
PAUSE
: OFF
ISS
: 1
FM SENSE
: DX
(US, 5E)
FM MODE
: FM ST
(EXCEPT US, 5E)
2X REC TIME
: NORM
• Abbreviation
5E : E model with the indication of the country of origin.
TAPE SECTION
Tape Speed Adjustment
Procedure:
1.
Enter the FWD playback mode.
2.
Adjust RV601 so that the value of the frequency counter reading
becomes 3,000 Hz.
Specification value:
Frequency counter
2,985 Hz – 3,015 Hz
3.
Check that the frequency deviation at the beginning and ending
of a tape is within 1.5 % (45 Hz).
4.
Set the 2x REC TIME switch to DOUBLE (2.4 cm/s).
5.
Adjust RV602 so that the value of the frequency counter reading
becomes 1,500 Hz.
Adjustment Location :
MAIN board (see page 9)
PRECAUTION
1.
Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback/erase head
pinch roller
rubber belts
capstan
2.
Demagnetize the record/playback head with a head demagnet-
izer. (Do not bring a head demagnetizer close to the erase
head.)
3.
Do not use a magnetized screwdriver for the adjustments.
4.
The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
• Torque Measurement
Signal
3 kHz, 0 dB
Used for
Tape Speed Adjustment
Tape
WS-48A
Test tape
WS-48A
(3kHz, 0dB)
Set
2
jack (J301)
16
Ω
(EXCEPT US MODEL)
32
Ω
(US MODEL)
Frequency counter
+
–
Mode
FWD
FWD
Back Tension
REV
REV
Back Tension
FF, REW
Torque Meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
Meter Reading
19.6 to 29.4 mN•m
(20 to 30 g•cm)
(0.28 to 0.42 oz•inch)
Less than 1.96 mN•m
(Less than 2.0g•cm)
(Less than 0.028 oz•inch)
19.6 to 29.4 mN•m
(20 to 30 g•cm)
(0.28 to 0.42 oz•inch)
Less than 1.96 mN•m
(Less than 2.0g•cm)
(Less than 0.028 oz•inch)
More than 39.2 mN•m
(More than 40 g•cm)
(More than 0.56 oz•inch)
